Which of the following systems has equations that are dependent? 1. 2x + 2y = 6
4x + 4y = 4

2. 2x + 2y = 6
2x - 2y = 6

3. y = -x+3
y = -x-3

4. 2x+2y = 6
y = -x + 3

y = x + 95

y = 42 + 95

y=137 mm hg

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.